AFP - A Chinese court has upheld US pharmaceutical giant Pfizer's patent for its erectile dysfunction drug Viagra, overturning a previous ruling.

AP - A Beijing court has sided with the drugmaker Pfizer Inc. in a ruling against local drug makers keen to sell generic versions of Viagra in China — though it was unclear if the decision would dent the widespread availability of fake versions of the impotence drug.

Reuters - Walgreen Co. on Monday said it had agreed to buy the Delaware-based Happy Harry's chain of 76 pharmacies for an undisclosed amount, its largest acquisition in 20 years.